1. Chapter 21: Regulation of Calcium and Magnesium
Murray J. Favus and
David Goltzman

2. From the Primer on the Metabolic Bone Diseases and Disorders of Mineral Metabolism, 7th Edition.
Figure 1
Figure 1 Calcium balance. On average, in a typical adult, 1 g of elemental calcium (Ca+2) is ingested per day. Of this, 200 mg/d will be absorbed and 800 mg/d excreted. Approximately 1 kg of Ca is stored in bone and 500 mg/d is released by resorption or deposited during bone formation. Of the 10 g of Ca filtered through the kidney per day, only 200 mg or less appears in the urine, the remainder being reabsorbed.
Figure 1 Calcium balance. On average, in a typical adult, 1 g of elemental calcium (Ca+2) is ingested per day. Of this, 200 mg/d will be absorbed and 800 mg/d excreted. Approximately 1 kg of Ca is stored in bone and 500 mg/d is released by resorption or deposited during bone formation. Of the 10 g of Ca filtered through the kidney per day, only 200 mg or less appears in the urine, the remainder being reabsorbed.
© 2008 American Society for Bone and Mineral Research

3. Table 1: Conditions That Increase or Decrease Intestinal Ca Absorption
From the Primer on the Metabolic Bone Diseases and Disorders of Mineral Metabolism, 7th Edition.
Table 1: Conditions That Increase or Decrease Intestinal Ca Absorption
© 2008 American Society for Bone and Mineral Research

4. From the Primer on the Metabolic Bone Diseases and Disorders of Mineral Metabolism, 7th Edition.
Table 2: Hormones and Conditions That Regulate Urine Ca and Mg Excretion
© 2008 American Society for Bone and Mineral Research